3 * fmt_addr.c -- format an address field (from fmt_scan)
10 #include <h/fmt_scan.h>
12 static char *buf; /* our current working buffer */
13 static char *bufend; /* end of working buffer */
14 static char *last_dst; /* buf ptr at end of last call */
15 static unsigned int bufsiz; /* current size of buf */
17 #define BUFINCR 512 /* how much to expand buf when if fills */
19 #define CPY(s) { cp = (s); while ((*dst++ = *cp++)) ; --dst; }
21 /* check if there's enough room in buf for str. add more mem if needed */
22 #define CHECKMEM(str) \
23 if ((len = strlen (str)) >= bufend - dst) {\
25 int n = last_dst - buf;\
26 bufsiz += ((dst + len - bufend) / BUFINCR + 1) * BUFINCR;\
27 buf = realloc (buf, bufsiz);\
31 adios (NULL, "formataddr: couldn't get buffer space");\
32 bufend = buf + bufsiz;\
36 /* fmt_scan will call this routine if the user includes the function
37 * "(formataddr {component})" in a format string. "orig" is the
38 * original contents of the string register. "str" is the address
39 * string to be formatted and concatenated onto orig. This routine
40 * returns a pointer to the concatenated address string.
42 * We try to not do a lot of malloc/copy/free's (which is why we
43 * don't call "getcpy") but still place no upper limit on the
44 * length of the result string.
46 * This routine is placed in a separate library so it can be
47 * overridden by particular programs (e.g., "replsbr").
51 formataddr (char *orig, char *str)
58 register struct mailname *mp = NULL;
60 /* if we don't have a buffer yet, get one */
62 buf = malloc (BUFINCR);
64 adios (NULL, "formataddr: couldn't allocate buffer space");
65 last_dst = buf; /* XXX */
66 bufsiz = BUFINCR - 6; /* leave some slop */
67 bufend = buf + bufsiz;
70 * If "orig" points to our buffer we can just pick up where we
71 * left off. Otherwise we have to copy orig into our buffer.
75 else if (!orig || !*orig) {
79 dst = last_dst; /* XXX */
84 /* concatenate all the new addresses onto 'buf' */
85 for (isgroup = 0; cp = getname (str); ) {
86 if ((mp = getm (cp, NULL, 0, fmt_norm, NULL)) == NULL)
89 if (isgroup && (mp->m_gname || !mp->m_ingrp)) {
93 /* if we get here we're going to add an address */
99 CHECKMEM (mp->m_gname);